*{
    padding: 0;
    margin: 0;
    /* transition: all .3s; */
}

img{
    width: auto;  
    height: auto;  
    max-width: 100%;  
    max-height: 100%;     
}

.flex-colum{
    display: flex;
    flex-flow: column nowrap;
}

.flex-row{
    display: flex;
    flex-flow: row nowrap;
}

.flex-jusity-center{
    justify-content: center;
}

.flex-align-center{
    align-items: center;
}

.flex-center{
    justify-content: center;
    align-items: center;
}

.flex-jusity-space-between{
    justify-content: space-between;
}

.flex-jusity-space-around{
    justify-content: space-around;
}

.flex-align-start{
    align-items: flex-start;
}

.flex-colum-reverse{
    display: flex;
    flex-direction: column-reverse;
}

.flex-row-reverse{
    display: flex;
    flex-direction: row-reverse;
}

.flex-align-end{
    align-items: flex-end;
}

.position-rel{
    position: relative;
}

.position-abs{
    position: absolute;
}

.text-center{
    text-align: center;
}

.text-left{
    text-align: left;
}

.text-right{
    text-align: right;
}

.inline-box{
    display: inline-block;
    width: 100%;
    height: 100%;
}

.box{
    display: block;
    width: 100%;
    height: 100%;
}

.round{
    border-radius: 50%;
}

.default-size{
    width: 100%;
}

.bold{
    font-family: PingFangSC-Semibold, sans-serif;
    font-weight: bold;
}

.left{
    float: left;
}

.cur-pointer{
    cursor: pointer;
}

.btn-action{
    transition: all .3s;
}

.btn-action:hover{
    transform-origin: 50% 50%;
    transform: scale(1.07);
    /* transform: rotateX(180deg); */
}